The Constitution gives the president the power to 'make treaties", with consent of Congress. So State makes the deals then presents them to Congress, and this a

The Constitution gives the president the power to 'make treaties", with consent of Congress. So State makes the deals then presents them to Congress, and this administration pretty much expects Congress to rubber-stamp whatever they want. Congress has the power to regulate foreign commerce, so it is debatable whether the president can, for instance, impose tariffs without Congress, but if Congress just rolls over for belly-rubs, so much for that.